Find Cheap Flights from Seattle/Tacoma Intl to Bangkok Suvarnabhumi & other airports (SEA - BKK)

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Tue 19/12
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Good to Know

Low Season:
September
Best time to beat the crowds
3%
expected price decrease
High Season:
June
Most popular time to fly
17%
expected price increase
Average price:
C$ 1504
(avg. price over the last 2 weeks)
Good Deal:
C$ 868
or less (round trip)

When to Book Flights from Seattle/Tacoma Intl to Bangkok Suvarnabhumi & other airports

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for C$ 868 or less.
The cheapest flight from Seattle/Tacoma Intl to Bangkok Suvarnabhumi & other airports was found, on average, 76 days before departure.
Book at least 5 weeks before departure in order to get a below-average price.
High season is considered to be May, June and July. The cheapest month to fly is September.
Morning departure is around 16% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Seattle/Tacoma Intl to Bangkok Suvarnabhumi & other airports Flights

How long does a flight from Seattle/Tacoma Intl to Bangkok Suvarnabhumi & other airports take?
An average nonstop flight takes 20h 20m, covering a distance of 11986 km.
Which airlines provide the cheapest flights from Seattle/Tacoma Intl to Bangkok Suvarnabhumi & other airports?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines (C$ 726), XiamenAir (C$ 762) and Asiana Airlines (C$ 789).
Do I need a passport to fly between Seattle/Tacoma Intl and Bangkok Suvarnabhumi & other airports?
Yes.

Book cheap flights from Seattle/Tacoma Intl to Bangkok Suvarnabhumi & other airports (round-trip)

Airports
Origin
Seattle
C$ 726
only
C$ 726
Destination
Bangkok
C$ 726
only
C$ 726
Wed, 17 Jan
SEA
BKK
31h 10m
Wed, 24 Jan
BKK
SEA
39h 27m
C$ 726
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, 30 Apr
SEA
BKK
36h 50m
Thu, 17 May
BKK
SEA
34h 50m
C$ 762
Trip: 18 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 255 reviews
Overall
6.9
Boarding
7.1
Comfort
7.1
Crew
7.3
Entertainment
6.5
Food
6.7
XMN
LAX
Mediocre 2.0

I was forced to buy a new ticket home, which made me discover how wonderful Japan Airlines is...

How are these people still in business? The only people answering customer service hotlines were from the main HQ who only spoke Chinese and would immediately transfer callers to a line for “forgeiners” which would just ring awhile and then disconnect. Same thing happened for at least 10 different people stranded by cancelled flights, even had people trying to call for me from the US. A travel agency was able to switch my friends flights, only to be blocked at his gate by an uninformed Xiamen agent saying he needed a visa for his layover in China, ultimately forcing him to buy a whole new ticket. Xiamen never answered, reimbursed, or recitified any of this. On the flight there, flight attendants had attitudes and SMOKED IN AIRPLANE, it STANK like an ashtray!!! And the food was the worst I ever encountered.

LAX
XMN
Mediocre 2.0

Nothing

I couldn't fly because they said there was NO TRANSIT lounge in the airport and I didn't have a VISA to enter China? Who ever heard of a visa for transit?! My destination was Singapore! I am told I have to get a transit visa in order to return home and for me and my son 350!! For 2 hours transit in an airport??? This is NOT a world class airlines, they make their own rules. I will buy another ticket!!

XMN
SGN
Excellent 10.0

All announcements in Chinese and English. They keep feeding you.

Lots of checkpoints but hey. Why complain about them trying to keep us safe.

XMN
LAX
Excellent 10.0

The food was surprisingly good. I would have expected some of it from a restaurant, not an airline. The in-seat entertainment was functional and had a lot of things to watch and games to play.

Nothing really. We have to keep in mind that an airline can only do so much to help us get through flights that are many hours long. This Xiamen flight was about as good as I can imagine a long international flight could be.

LAX
XMN
Excellent 8.0

The food was good and staff was friendly

Uncomfortable

Mon, 5 Feb
SEA
BKK
20h 20m
Thu, 15 Feb
BKK
SEA
24h 10m
C$ 789
Trip: 11 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 2799 reviews
Boarding
8.4
Comfort
8.2
Crew
8.7
Entertainment
8.0
Food
8.2
IST
ICN
Mediocre 2.0

Delaying without notice and luggage lost

JFK
ICN
Good 7.6

It was nice to know that JetBlue and Asiana are connected. I did not need to claim and check my suitcase for the connecting flights anymore. The entertainment device was also nice.

I think JFK rather than Asiana was the issue. It was quite cold inside the boarding area, and the waiting area happened to be unpleasant because of a lack of seats and the noise. The announcements before boarding happened to be annoying. Lavatory happened to become quite messy at the end of the flight.

ICN
HKG
Good 7.6

Overall, even with the turbulence, the overall flight experience was quite good. Seat was decently comfortable, and crew members were helpful.

The boarding gate was tricky. Boarding at nearby gates was ongoing, so the boarding area was quite crowded, and the waiting line was quite confusing at ICN. The problem was with Hong Kong International Airport. It seems HKIA is experiencing 'traffic jam' very often. It's quite risky for the passenger like me who is expected to have another long journey back home after arriving in HKIA. Should be praying again and again in order to take the AEL and MTR before the service is over around 1 AM.

SFO
ICN
Good 7.3

I appreciated the food and service from the stewardesses was great. The red embroidered apron was a nice touch.

My luggage was late, and I did not receive it until 24 hours after I landed in Hanoi. This caused a big inconvenience. I had packed my things very carefully, and most of what I needed the first day was in there.

ICN
MNL
Mediocre 2.0

Nothing

All

Tue, 9 Jan
SEA
BKK
34h 05m
Sun, 21 Jan
BKK
SEA
17h 20m
C$ 1038
Trip: 13 days
8.6ExcellentShow reviews
Overall 8.6 Excellent
Based on 3541 reviews
Boarding
8.8
Comfort
8.6
Crew
8.9
Entertainment
8.5
Food
8.3
TPE
PNH
Good 7.3

Flight was delayed with minimal explanation and updates.

YYZ
TPE
Excellent 9.3

the management of EVA is excellent....from reservation to check in...in flight service is also excellent....seats not as comfortable as China Airlines....and the entertainment choices were disappointing....food taste and presentation was excellent....it is a very good airline....

YYZ
TPE
Excellent 9.3

Overall experience was very good. Check in was long but clerks were very good.

I did not like that they moved my cabin bag without telling me. Attendant realized afterwards and apologized.

TPE
BKK
Excellent 9.3

same comments as the Toronto to Taipei sector....

TPE
BKK
Okay 4.3

The crew was gracious and didn't bother my sleep to eat.

The seats were hard and oddly shaped such that my legs and feet felt numb after a while. Not the way I want to spend my time

Fri, 4 May
SEA
BKK
32h 20m
Sun, 13 May
BKK
SEA
32h 30m
C$ 762
Trip: 10 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 255 reviews
Overall
6.9
Boarding
7.1
Comfort
7.1
Crew
7.3
Entertainment
6.5
Food
6.7
XMN
SIN
Mediocre 2.0

Nothing

They will cheat u of money. Somehow. Beware.

SGN
XMN
Excellent 9.6

Crews, food. Also Transfer Lounge in Xiamen is a good place without charge.

Boarding because we have to take bus at Xiamen airport.Also, security checks at Xiamen are very complicated.

XMN
SGN
Excellent 10.0

All announcements in Chinese and English. They keep feeding you.

Lots of checkpoints but hey. Why complain about them trying to keep us safe.

JFK
FOC
Mediocre 2.0

The front dest and customes have horrible attitude! They will ingore you.

XMN
LAX
Excellent 10.0

The food was surprisingly good. I would have expected some of it from a restaurant, not an airline. The in-seat entertainment was functional and had a lot of things to watch and games to play.

Nothing really. We have to keep in mind that an airline can only do so much to help us get through flights that are many hours long. This Xiamen flight was about as good as I can imagine a long international flight could be.

Sun, 4 Mar
SEA
BKK
20h 20m
Fri, 16 Mar
BKK
SEA
24h 10m
C$ 789
Trip: 12 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 2799 reviews
Boarding
8.4
Comfort
8.2
Crew
8.7
Entertainment
8.0
Food
8.2
JFK
ICN
Good 7.6

It was nice to know that JetBlue and Asiana are connected. I did not need to claim and check my suitcase for the connecting flights anymore. The entertainment device was also nice.

I think JFK rather than Asiana was the issue. It was quite cold inside the boarding area, and the waiting area happened to be unpleasant because of a lack of seats and the noise. The announcements before boarding happened to be annoying. Lavatory happened to become quite messy at the end of the flight.

ICN
MNL
Mediocre 2.0

Nothing

All

SFO
ICN
Good 7.3

I appreciated the food and service from the stewardesses was great. The red embroidered apron was a nice touch.

My luggage was late, and I did not receive it until 24 hours after I landed in Hanoi. This caused a big inconvenience. I had packed my things very carefully, and most of what I needed the first day was in there.

ICN
HKG
Good 7.6

Overall, even with the turbulence, the overall flight experience was quite good. Seat was decently comfortable, and crew members were helpful.

The boarding gate was tricky. Boarding at nearby gates was ongoing, so the boarding area was quite crowded, and the waiting line was quite confusing at ICN. The problem was with Hong Kong International Airport. It seems HKIA is experiencing 'traffic jam' very often. It's quite risky for the passenger like me who is expected to have another long journey back home after arriving in HKIA. Should be praying again and again in order to take the AEL and MTR before the service is over around 1 AM.

ICN
MNL
Excellent 8.0

well the pilot did a great job. we landed safely to manila. food serve taste good, and the flight attendant from chicago to manila, did a great job2.im thankful for overall service.

I hate when my baggage is damage during my flight and no one i reach, easily. the asiana airline in Manila told me last dec. 11/12 2017, they will call me back at 10am but no one did. until now the number cant be reach.i paid for insurance if something happen to my bag worth $300 to be paid me back if my baggage damage but the asiana staff in Manila ask me f ok if they pay me only$80. i said ok. because i need it soon. but look like they dont care to give me. so i change my mind. the bag i bought cost $150 this year i bought it. need to be paid same. thanks

Fri, 30 Mar
SEA
BKK
32h 20m
Sun, 8 Apr
BKK
SEA
32h 30m
C$ 773
Trip: 10 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 255 reviews
Overall
6.9
Boarding
7.1
Comfort
7.1
Crew
7.3
Entertainment
6.5
Food
6.7
LAX
XMN
Excellent 10.0

Nice and friendly. Chinese is always spoken first then followed by English. Pillow and blanket provided.

Window seat on a 14 hour flight has its pros and cons. Little more room vs having to wake people up to get up and walk or go to bathroom.

XMN
LAX
Mediocre 2.0

I was forced to buy a new ticket home, which made me discover how wonderful Japan Airlines is...

How are these people still in business? The only people answering customer service hotlines were from the main HQ who only spoke Chinese and would immediately transfer callers to a line for “forgeiners” which would just ring awhile and then disconnect. Same thing happened for at least 10 different people stranded by cancelled flights, even had people trying to call for me from the US. A travel agency was able to switch my friends flights, only to be blocked at his gate by an uninformed Xiamen agent saying he needed a visa for his layover in China, ultimately forcing him to buy a whole new ticket. Xiamen never answered, reimbursed, or recitified any of this. On the flight there, flight attendants had attitudes and SMOKED IN AIRPLANE, it STANK like an ashtray!!! And the food was the worst I ever encountered.

BKK
XMN
Mediocre 2.0

I was denied a boarding pass and was not allowed to transit through China, because of a visa that was needed I was not told about by Kayak.com. Therefore, being the last day I was allowed to stay in Thailand, I had to scramble to find an outbound flight the same day, including paying almost double the cost of the original flight. The Thai check-in agent told me to never transit through mainland China again, because the visa requirement information that is not provided.

JFK
FOC
Good 6.0

直飞

TPE
XMN
Excellent 8.0

Staff was friendly

Fri, 13 Apr
SEA
BKK
35h 20m
Thu, 19 Apr
BKK
SEA
32h 30m
C$ 773
Trip: 7 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 255 reviews
Overall
6.9
Boarding
7.1
Comfort
7.1
Crew
7.3
Entertainment
6.5
Food
6.7
XMN
LAX
Excellent 10.0

The food was surprisingly good. I would have expected some of it from a restaurant, not an airline. The in-seat entertainment was functional and had a lot of things to watch and games to play.

Nothing really. We have to keep in mind that an airline can only do so much to help us get through flights that are many hours long. This Xiamen flight was about as good as I can imagine a long international flight could be.

JFK
FOC
Good 6.0

直飞

SGN
XMN
Excellent 9.6

Crews, food. Also Transfer Lounge in Xiamen is a good place without charge.

Boarding because we have to take bus at Xiamen airport.Also, security checks at Xiamen are very complicated.

XMN
SGN
Excellent 10.0

All announcements in Chinese and English. They keep feeding you.

Lots of checkpoints but hey. Why complain about them trying to keep us safe.

LAX
XMN
Mediocre 2.0

Nothing

I couldn't fly because they said there was NO TRANSIT lounge in the airport and I didn't have a VISA to enter China? Who ever heard of a visa for transit?! My destination was Singapore! I am told I have to get a transit visa in order to return home and for me and my son 350!! For 2 hours transit in an airport??? This is NOT a world class airlines, they make their own rules. I will buy another ticket!!

Thu, 7 Jun
SEA
BKK
30h 40m
Thu, 21 Jun
BKK
SEA
30h 00m
C$ 974
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Mon, 1 Jan
SEA
BKK
36h 40m
Sun, 21 Jan
BKK
SEA
35h 45m
C$ 801
Trip: 21 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 255 reviews
Overall
6.9
Boarding
7.1
Comfort
7.1
Crew
7.3
Entertainment
6.5
Food
6.7
TPE
XMN
Excellent 8.0

Staff was friendly

XMN
LAX
Mediocre 2.0

I was forced to buy a new ticket home, which made me discover how wonderful Japan Airlines is...

How are these people still in business? The only people answering customer service hotlines were from the main HQ who only spoke Chinese and would immediately transfer callers to a line for “forgeiners” which would just ring awhile and then disconnect. Same thing happened for at least 10 different people stranded by cancelled flights, even had people trying to call for me from the US. A travel agency was able to switch my friends flights, only to be blocked at his gate by an uninformed Xiamen agent saying he needed a visa for his layover in China, ultimately forcing him to buy a whole new ticket. Xiamen never answered, reimbursed, or recitified any of this. On the flight there, flight attendants had attitudes and SMOKED IN AIRPLANE, it STANK like an ashtray!!! And the food was the worst I ever encountered.

XMN
LAX
Excellent 10.0

The food was surprisingly good. I would have expected some of it from a restaurant, not an airline. The in-seat entertainment was functional and had a lot of things to watch and games to play.

Nothing really. We have to keep in mind that an airline can only do so much to help us get through flights that are many hours long. This Xiamen flight was about as good as I can imagine a long international flight could be.

LAX
XMN
Excellent 10.0

Nice and friendly. Chinese is always spoken first then followed by English. Pillow and blanket provided.

Window seat on a 14 hour flight has its pros and cons. Little more room vs having to wake people up to get up and walk or go to bathroom.

SGN
XMN
Excellent 9.6

Crews, food. Also Transfer Lounge in Xiamen is a good place without charge.

Boarding because we have to take bus at Xiamen airport.Also, security checks at Xiamen are very complicated.

Wed, 27 Dec
SEA
BKK
32h 15m
Wed, 10 Jan
BKK
SEA
54h 50m
C$ 944
Trip: 15 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 255 reviews
Overall
6.9
Boarding
7.1
Comfort
7.1
Crew
7.3
Entertainment
6.5
Food
6.7
JFK
FOC
Mediocre 2.0

The front dest and customes have horrible attitude! They will ingore you.

LAX
XMN
Mediocre 2.0

Nothing

I couldn't fly because they said there was NO TRANSIT lounge in the airport and I didn't have a VISA to enter China? Who ever heard of a visa for transit?! My destination was Singapore! I am told I have to get a transit visa in order to return home and for me and my son 350!! For 2 hours transit in an airport??? This is NOT a world class airlines, they make their own rules. I will buy another ticket!!

LAX
XMN
Excellent 8.0

The food was good and staff was friendly

Uncomfortable

BKK
XMN
Mediocre 2.0

I was denied a boarding pass and was not allowed to transit through China, because of a visa that was needed I was not told about by Kayak.com. Therefore, being the last day I was allowed to stay in Thailand, I had to scramble to find an outbound flight the same day, including paying almost double the cost of the original flight. The Thai check-in agent told me to never transit through mainland China again, because the visa requirement information that is not provided.

XMN
SGN
Excellent 10.0

All announcements in Chinese and English. They keep feeding you.

Lots of checkpoints but hey. Why complain about them trying to keep us safe.

Fri, 29 Dec
SEA
BKK
56h 30m
Wed, 31 Jan
BKK
SEA
66h 00m
C$ 969
Trip: 34 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 255 reviews
Overall
6.9
Boarding
7.1
Comfort
7.1
Crew
7.3
Entertainment
6.5
Food
6.7
JFK
FOC
Good 6.0

直飞

LAX
XMN
Excellent 8.0

The food was good and staff was friendly

Uncomfortable

XMN
SGN
Excellent 10.0

All announcements in Chinese and English. They keep feeding you.

Lots of checkpoints but hey. Why complain about them trying to keep us safe.

JFK
FOC
Mediocre 2.0

The front dest and customes have horrible attitude! They will ingore you.

SGN
XMN
Excellent 9.6

Crews, food. Also Transfer Lounge in Xiamen is a good place without charge.

Boarding because we have to take bus at Xiamen airport.Also, security checks at Xiamen are very complicated.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.